package com.pj.project4sp.role4permission;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 角色权限中间表
 *
 * @author kong
 */
@Service
public class SpRolePermissionService {


    @Autowired
    private SpRolePermissionMapper spRolePermissionMapper;


    /**
     * 获取指定角色的所有权限码 【增加缓存】
     */
    @Cacheable(value = "api_pcode_list", key = "#roleId")
    public List<String> getPcodeByRid(long roleId) {
        return spRolePermissionMapper.getPcodeByRoleId(roleId);
    }

    /**
     * 获取指定角色的所有权限码 (Object类型)  【增加缓存】
     */
    @Cacheable(value = "api_pcode_list2", key = "#roleId")
    public List<Object> getPcodeByRid2(long roleId) {
        List<String> codeList = spRolePermissionMapper.getPcodeByRoleId(roleId);
        return codeList.stream().map(String::valueOf).collect(Collectors.toList());
    }

    /**
     * [T] 修改角色的一组权限关系	【清除缓存 】
     */
    @Transactional(rollbackFor = Exception.class)
    @CacheEvict(value = {"api_pcode_list", "api_pcode_list2"}, key = "#roleId")
    public int updateRoleMenu(long roleId, String[] pcodeArray) {

        // 万一为空
        if (pcodeArray == null) {
            pcodeArray = new String[0];
        }

        // 先删
        spRolePermissionMapper.deleteByRoleId(roleId);

        // 再添加
        for (String pcode : pcodeArray) {
            spRolePermissionMapper.add(roleId, pcode);
        }

        // 返回
        return pcodeArray.length;
    }


}
